Burner



ay 24, 1938. M, B SMH-H Er AL 2,118,741

BURNER V Filed MarCh 50, 1935 EIE.IE||

ElEf El M. E. .SMITH 5.5. CHELSOJY.

BY mj HTTORNEYS Patented May 24, 193s Z,l18,74l

UNITED STATES PATENT OFFICE BURNER Melford B. Smith and Edward E. Carlson, San Francisco, Calif., assignors of one-fourth to David A. Sampson, San Francisco, Calif.

Application March 30, 1936, Serial No. 71,748

1 Claim. (Cl. 158-111) This invention relates broadly to improvements 5 and the cone 6. The bottom of this pipe I1 is in burners and particularly to the mixing chamthreaded so as to threadably engage a conebers thereof, and has particular reference to the shaped air inlet member I8 having the same anguair control means for the said mixing chambers lar relation to a vertical line as the sides of the 5 of various burners such as those used in laboracone 5. Therefore, when the cone-shaped memtory work. ber I8 is screwed upwardly or downwardly its The principal object of the invention is to proinner surface will always be parallel with the duce an air control means for adjustably mixing outer surface of the cone, thus forming an annuthe gaseous fuel in the mixing chambers of burnlar air space. The result of this construction is 10 ers which may be adjusted to a nicety and which that when the pilot is lighted and the valve ll is l0 will, therefore, greatly increase the effectiveness turned so as to admit gaseous fuel to the tip 8 the of the burner. gas will fiow upwardly through the pipe Il, thus A further object of the invention is to produce acting as an injector to draw in air between the an air control device for `gaseous fuel burners cone-shaped base 5 and the cone-shaped member wherein a cone-shaped base is employed and a i8, as indicated by the curved arrows in the 15 correspondingly shaped shell coacts therewith the figures. This air will effectively combine with the shell being adjustable relative to the base to fuel and, therefore, a very effective mixture will control the air to the mixing chamber of the take place previous to the same reaching the pilot device. light which will ignite this mixture, thus creating Other objects and advantages will be apparent a blue flame which is necessary in laboratory or 20 during the course of the following description. other work. It will readily be understood that In the accompanying drawing forming a part by adjusting the cone-shaped member IB relative of this specification and in which like numerals to the base 5 that a very ne air control may be are employed to designate like parts throughout effected. the same, It is to be understood that the form of our in- 25 Fig. 1 iS a Side elevatiOn 0f our improved device vention herewith shown and described is to be having a portion thereof cut away; taken as a preferred example of the same and Fig. 2 is a view similar to Fig. 1 and taken at that various changes relative to the material, size, right angles thereto; shape and arrangement of parts may be resorted Fig- 3 is a Side elevation 0f the air controlling to without departing from the spirit of the inven- 30 cone of the device. tion or the scope of the subjoined claim.

In the accompanying draWirlg wherein for the Having thus described our invention, we purpose of illustration is shown a preferred em- Claim:- bodiment 0f our invenOn, the numeral 5 deS- In a device of the character described, a conical ignates a base which is cone-shaped and has an base having an outwardly aring bore therein, a 35 inverted cone-shaped bore 6. A feed pipe 1 conpipe mounted above and spaced from said bore nects the burner jet 8 with the ses Supply pipe 9. and in axial alignment therewith, a cone-shaped A ValVe inserted in the pipe 7 COnIOlS the shell carried by said pipe and axially adjustable amount of fuel which flows through the pipe to to and away from said cone-shaped base, the

the burner 0f the deVCe- A branch pipe l2 COnbore of said base forming with said shell a mixing 40 Dents the pipe 1 and the HOW 0f fllQl there@ iS chamber, means for delivering gas to said bore, Controlled by an adjusting SCI'QW |3- ThS Pipe whereby said gas passing to said pipe will mingle I2 is provided With an Offset I4 Which forms a with air entering circumferentially between said handle for moving the device about. An exten- Shell and Said Cone,

sion I6 extends vertically and has secured thereto MELFORD B. SMITH. 45

a. combustion pipe I1, which pipe is positioned EDWARD E. CARLSON. in coaxial alignment with the cone-shapedv base 

